/Engine/Source/Editor/KismetCompiler/Public/KismetCompiler.h
Maps the nodes in an intermediate tunnel expansion path back to the owning tunnel instance node.
void MapExpansionPathToTunnelInstance ( const [UEdGraphNode](API\Runtime\Engine\EdGraph\UEdGraphNode) * InnerExpansionNode, const [UEdGraphNode](API\Runtime\Engine\EdGraph\UEdGraphNode) * OuterTunnelInstance )